Radial surface density profiles of 3C sources and local clusters for different types of galaxies. The 3C profiles are averaged for red/IR-only/blue galaxies, respectively, using the 15 sources at 1 < z < 1.5 with brightness range 21 < F140W < 26 (top left). For the local clusters, only spectroscopic members are used, split into bright-red, faint-red, and blue. For the 11 Abell clusters, the averaged profiles are shown (top right). The profiles for the Coma and Perseus clusters (bottom) show, in addition, spectroscopically confirmed very faint red sources of Coma and all faint-red candidate cluster members of Perseus; the Perseus samples all bright-red and all blue are not shown because these are spectroscopically 90% complete, so that their profiles remain essentially the same as the profiles of the spectroscopic samples shown. The standard deviations of each radial bin are large and not shown to avoid confusion.